Volts to Millivolts converter (V to mV)
Convert Volts (V) to Millivolts (mV) with this free calculator. Type a value, press Convert, and the page applies the same factor shown in the formula below — no rounded shortcut, and nothing is stored on a server.
How to convert Volts to Millivolts
1 volt (V) is equal to 1,000 millivolts (mV).
V(mV) = V(V) × 1,000
Multiply the voltage in volts by 1,000:
Example: Convert 5 V to mV:
V(mV) = 5 × 1,000 = 5,000 mV
What is a Volts?
The Volts (V) is the starting or target unit on this page. Use the calculator above to convert values without looking up the factor by hand.
What is a Millivolts?
The Millivolts (mV) is the starting or target unit on this page. Use the calculator above to convert values without looking up the factor by hand.
This page converts electric potential from Volts into Millivolts. One V equals 1000 mV.
Volts to Millivolts conversion table
Common V values and the matching mV result, calculated with the same factor as the widget. Highlight a nearby row if you want a quick check without entering a number.
| Volts (V) | Millivolts (mV) |
|---|---|
| 0.001 V | 1 mV |
| 0.01 V | 10 mV |
| 0.1 V | 100 mV |
| 1 V | 1000 mV |
| 5 V | 5000 mV |
| 10 V | 10000 mV |
| 100 V | 100000 mV |
| 1000 V | 1000000 mV |
How this calculator works
The form on this page is a Volts-to-Millivolts converter. After you enter a number, JavaScript multiplies or rearranges it with the published conversion factor and writes the mV result in the output box. The step-by-step panel repeats the arithmetic so you can copy it into homework or a spreadsheet.
Reviewed by Hamsen, founder of GigaTables and a biology engineer. See the about page for how formulas are checked before a tool is published.
FAQ
How many mV are in 1 V?
1 V = 1000 mV.
How do I convert Volts to Millivolts?
Multiply the voltage in volts by 1,000:
Is this V to mV converter free?
Yes. GigaTables calculators are free to use in a browser. You do not need an account, and the values you type are not uploaded.